public Boolean Check(CellsInfo cellsInfo, NumbersInfo numbersInfo)
{
if (cellsInfo == null)
{
throw new ArgumentNullException(nameof(cellsInfo));
}
if (numbersInfo == null)
{
throw new ArgumentNullException(nameof(numbersInfo));
}
return(Check(cellsInfo) && Check(numbersInfo));
}
private void UseCell(CellsInfo cellsInfo, NumbersInfo numbersInfo, Tuple <GridPoint, Int32> data)
{
cellsInfo.Data.Remove(data.Item1);
foreach (GridPoint cell in cellsInfo.Data.Keys.ToArray())
{
cellsInfo.Data[cell] = cellsInfo.Data[cell].UseNumber(data.Item2);
}
numbersInfo.Data.Remove(data.Item2);
foreach (Int32 number in numbersInfo.Data.Keys.ToArray())
{
numbersInfo.Data[number].Remove(data.Item1);
}
}
private Boolean Process(CellsInfo cellsInfo, CalculationContext context)
{
NumbersInfo numbersInfo = _numbersInfoFactory.Create(cellsInfo);
Tuple <GridPoint, Int32> data = ChooseCell(cellsInfo, numbersInfo);
while (data != null)
{
context.Grid[data.Item1] = data.Item2;
context.EmptyCount--;
UseCell(cellsInfo, numbersInfo, data);
if (!_checker.Check(cellsInfo, numbersInfo))
{
return(false);
}
data = ChooseCell(cellsInfo, numbersInfo);
}
return(true);
}
private Boolean Check(NumbersInfo numbersInfo)
{
return(numbersInfo.Data.All(info => info.Value.Count > 0));
}
private Tuple <GridPoint, Int32> ChooseCell(CellsInfo cellsInfo, NumbersInfo numbersInfo)
{
return(ChooseCell(cellsInfo) ?? ChooseCell(numbersInfo));
}
private Tuple <GridPoint, Int32> ChooseCell(NumbersInfo numbersInfo)
{
return(numbersInfo.Data.Where(info => info.Value.Count == 1).Select(info => new Tuple <GridPoint, Int32>(info.Value[0], info.Key)).FirstOrDefault());
}
